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gfs2_fsck

NAME

gfs2_fsck - Offline GFS2 file system checker

SYNOPSIS

gfs2_fsck [OPTION]... DEVICE

WARNING

All GFS2 nodes must have the GFS2 filesystem unmounted before running gfs2_fsck. Failure to unmount all nodes may result in filesystem corruption.

DESCRIPTION

gfs2_fsck will check that the GFS2 file system on a device is structurally valid. It should not be run on a mounted file system. If file system corruption is detected, it will attempt to repair the file system. There is a limit to what gfs2_fsck can do. If important file system structures are destroyed, such that the checker cannot determine what the repairs should be, reparations could fail.

GFS2 is a journaled file system, and as such should be able to repair damages to the file system on its own. However, faulty hardware has the ability to write incomplete blocks to a file system thereby causing corruption that GFS2 cannot fix. The first step to ensuring a healthy file system is the selection of reliable hardware (i.e. storage systems that will write complete blocks - even in the event of power failure).

OPTIONS

-h

Help.

This prints out the proper command line usage syntax.

-q

Quiet.

-n

No to all questions.

By specifying this option, gfs2_fsck will only show the changes that would be made, but not make any changes to the filesystem.

-V

Version.

Print out the program version information.

-v

Verbose operation.

Print more information while running.

-y

Yes to all questions.

By specifying this option, gfs2_fsck will not prompt before making changes.